Answer: Vaigai River
Notes: The Archaeological Survey of India (ASI) has recently asked for revisions to the excavation report submitted by the archaeologist who led the Keezhadi project. The Keezhadi excavation site is near Madurai in Tamil Nadu, on the banks of the Vaigai River. It is a major Sangam-era settlement dating from the 5th century BCE to the 3rd century CE. The site reveals a well-planned, literate, and craft-based urban society. Keezhadi suggests that South India had early urbanisation independent of North Indian cultures. It is considered one of Tamil Nadu’s most important archaeological discoveries after Adichanallur.
